package io;

import java.io.File;

public class FileExtensionUtils {

	 public final static String XML = "xml";
	 public final static String JPEG = "jpg";
	 public final static String GIF = "gif";
	 public final static String BMP = "bmp";
	 public final static String PNG = "png";
	 public final static String CSS = "css";
	 

	    /**
	     * Get the extension of a file.
	     */  
	    public static String getExtension(File f) {
	        String ext = null;
	        String s = f.getName();
	        int i = s.lastIndexOf('.');

	        if (i > 0 &&  i < s.length() - 1) {
	            ext = s.substring(i+1).toLowerCase();
	        }
	        return ext;
	    }

}
